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Code Issues Projects Releases Wiki Activity

1. NPE crash fix

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This commit is contained in:
vadym 2020-06-28 10:06:26 -07:00
parent 4b4ae6737a
commit c0a779ce3c
1 changed files with 47 additions and 12 deletions
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59
app/src/main/java/io/github/chronosx88/yggdrasil/MainActivity.kt
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@ -7,6 +7,7 @@ import android.content.*
import android.content.pm.PackageManager
import android.net.VpnService
import android.net.wifi.p2p.WifiP2pDevice
import android.net.wifi.p2p.WifiP2pDeviceList
import android.net.wifi.p2p.WifiP2pManager
import android.os.Bundle
import android.util.Log
@ -63,8 +64,11 @@ class MainActivity : AppCompatActivity() {
private var currentPeers = setOf<PeerInfo>()
private var currentDNS = setOf<DNSInfo>()
private val wirelessPeers = mutableListOf<WifiP2pDevice>()
private val intentFilter = IntentFilter()
private val peerListListener = WirelessPeerList()
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_main)
@ -102,9 +106,6 @@ class MainActivity : AppCompatActivity() {
val wifiDirect = findViewById<Switch>(R.id.wifiDirect)
wifiDirect.setOnCheckedChangeListener { _, isChecked ->
mManager = getSystemService(Context.WIFI_P2P_SERVICE) as WifiP2pManager
mChannel = mManager!!.initialize(this, mainLooper, null);
if (ActivityCompat.checkSelfPermission(
this,
Manifest.permission.ACCESS_FINE_LOCATION
@ -327,11 +328,8 @@ class MainActivity : AppCompatActivity() {
return false
}
private class WiFiDirectBroadcastReceiver(mManager: WifiP2pManager,
mChannel: WifiP2pManager.Channel,
activity: MainActivity): BroadcastReceiver() {
var activity = activity
inner class WiFiDirectBroadcastReceiver(mManager: WifiP2pManager,
mChannel: WifiP2pManager.Channel): BroadcastReceiver() {
override fun onReceive(context: Context?, intent: Intent?) {
val action = intent!!.action
if (WifiP2pManager.WIFI_P2P_STATE_CHANGED_ACTION == action) {
@ -339,19 +337,40 @@ class MainActivity : AppCompatActivity() {
// the Activity.
val state = intent!!.getIntExtra(WifiP2pManager.EXTRA_WIFI_STATE, -1)
if (state == WifiP2pManager.WIFI_P2P_STATE_ENABLED) {
activity.setIsWifiP2pEnabled(true)
this@MainActivity.setIsWifiP2pEnabled(true)
} else {
activity.setIsWifiP2pEnabled(false)
this@MainActivity.setIsWifiP2pEnabled(false)
}
} else if (WifiP2pManager.WIFI_P2P_PEERS_CHANGED_ACTION == action) {
// The peer list has changed! We should probably do something about
// that.
// Request available peers from the wifi p2p manager. This is an
// asynchronous call and the calling activity is notified with a
// callback on PeerListListener.onPeersAvailable()
if (mManager != null) {
if (ActivityCompat.checkSelfPermission(
this@MainActivity,
Manifest.permission.ACCESS_FINE_LOCATION
) != PackageManager.PERMISSION_GRANTED
) {
// TODO: Consider calling
// ActivityCompat#requestPermissions
// here to request the missing permissions, and then overriding
// public void onRequestPermissionsResult(int requestCode, String[] permissions,
// int[] grantResults)
// to handle the case where the user grants the permission. See the documentation
// for ActivityCompat#requestPermissions for more details.
return
}
mManager!!.requestPeers(mChannel, peerListListener);
}
Log.d(TAG, "P2P peers changed");
} else if (WifiP2pManager.WIFI_P2P_CONNECTION_CHANGED_ACTION == action) {
// Connection state changed! We should probably do something about
// that.
} else if (WifiP2pManager.WIFI_P2P_THIS_DEVICE_CHANGED_ACTION == action) {
activity.updateThisDevice(
this@MainActivity.updateThisDevice(
intent!!.getParcelableExtra(
WifiP2pManager.EXTRA_WIFI_P2P_DEVICE
) as WifiP2pDevice
@ -371,7 +390,9 @@ class MainActivity : AppCompatActivity() {
/** register the BroadcastReceiver with the intent values to be matched */
override fun onResume() {
super.onResume()
receiver = WiFiDirectBroadcastReceiver(mManager!!, mChannel!!, this)
mManager = getSystemService(Context.WIFI_P2P_SERVICE) as WifiP2pManager
mChannel = mManager!!.initialize(this, mainLooper, null);
receiver = WiFiDirectBroadcastReceiver(mManager!!, mChannel!!)
registerReceiver(receiver, intentFilter)
}
@ -379,4 +400,18 @@ class MainActivity : AppCompatActivity() {
super.onPause()
unregisterReceiver(receiver)
}
inner class WirelessPeerList:WifiP2pManager.PeerListListener{
override fun onPeersAvailable(peers: WifiP2pDeviceList?) {
// Out with the old, in with the new.
this@MainActivity.wirelessPeers.clear()
this@MainActivity.wirelessPeers.addAll(peers!!.deviceList);
// If an AdapterView is backed by this data, notify it // of the change. For instance, if you have a ListView of available // peers, trigger an update.
//((WiFiPeerListAdapter) getListAdapter()).notifyDataSetChanged(); if (peers.size() == 0) { Log.d(WiFiDirectActivity.TAG, "No devices found"); return; } }
//just show message
showToast("available peers:"+this@MainActivity.wirelessPeers.size)
}
}
}